Multi-source heterogeneous flight accident track data fusion method

A multi-source heterogeneous data, flight accident technology, applied in the field of flight accident data processing, can solve problems such as abnormality, lack, and inaccurate flight accident trajectory data

Active Publication Date: 2017-09-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology

[0004] The invention purpose of the present invention is to aim at the deficiency of above-mentioned background technology, provides a kind of multi-source heterogeneous flight accident track data fusion method, has realized the unification of multi-source data frequency and data format, has solved the heterogeneity of flight accident data, Missing, sparse, abnormal and asynchronous technical problems that lead to inaccurate flight accident trajectory data

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Embodiment Construction

[0016] The technical solution of the invention will be described in detail below in conjunction with the drawings.

[0017] In the implementation of multi-source data fusion, such as figure 1 As shown, there are several main steps. Firstly, perform a unified time base correction for various data sources to ensure that various data are kept synchronized at each time sampling point; then perform abnormal state data on FDR data or QAR data Then use the flight dynamics model FDM of the corresponding model to trim the FDR data and QAR data interruption position, and supplement the necessary data. If the sampling points of some FDR parameters are too sparse, New data points can be generated by interpolation and FDM weighted average; finally, supplementary data and heterogeneous data such as CVR and ATC radar video data are heterogeneously fused to generate the final flight state estimate. The specific implementation steps include:

[0018] (1) The basic multi-source flight status data t...

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Abstract

The invention discloses a multi-source heterogeneous flight accident track data fusion method, relates to a flight accident data processing method and belongs to the technical field of data processing. The multi-source heterogeneous flight accident track data fusion method comprises the steps of firstly performing unified time reference correction on various data sources, then recognizing and eliminating abnormal flight data by using a wavelet algorithm, then performing data supplement on sparse flight parameter data by using a least square algorithm and flight dynamics model data, and finally performing heterogeneous fusion on a variety of heterogeneous flight data based on probabilistic graphical model method so as to generate a final flight accident track. Under the unified probabilistic framework, comprehensive data fusion is performed on the flight accident track by using different configurations and different sources of flight data and flight dynamics models of the corresponding aircraft models, and the estimation accuracy and the update frequency of the flight accident track are improved.

Description

Technical field [0001] The invention discloses a multi-source heterogeneous flight accident track data fusion method, relates to a method for processing flight accident data, and belongs to the technical field of data processing. Background technique [0002] For the analysis of the causes of aviation accidents, data such as flight data recorder (FDR), fast storage recorder (QAR), cabin sound recorder (CVR), air traffic control (ATC) radar, etc., these data have different forms, FDR and QAR The data is usually decoded into ASCII data form, CVR is sound information, and ATC radar data is video information. The physical properties, measurement range and accuracy between them are different, and traditional data fusion methods such as Kalman filtering cannot be used directly. For fusion, there is currently no unified mathematical tool and method for information fusion of heterogeneous data, and only analysis and algorithm design can be carried out for specific problems. And because ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06F17/50
CPCG06F30/15G06F30/20G06F18/25
Inventor 吴东苏李斌顾宏斌俞力玲钟民主
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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